LXX Gen 17:17

καὶ ἔπεσεν Ἀβραὰμ ἐπὶ πρόσωπον κοὶ ἐγέλασεν καὶ εἶπεν ἐν τῇ διανοίᾳ αὐτοῦ λέγων.Εἰ τῷ ἑκατονταετεῖ γενήσεται υἱός, καὶ εἰ Σάρρᾳ ἐνενήκοντα ἐτῶν γενήσεται ;

Abraham fell facedown. Then he laughed and said to himself, “Can a child be born to a man who is a hundred years old? Can Sarah give birth at the age of ninety?”